我正在尝试从Java程序向Queue发送消息，我遇到一个问题，它说它无法连接到主机＆amp;它似乎无法读取频道。
以下是来自AMERR01.log的错误
----- amqccita.c : 4113 -------------------------------------------------------
07/25/2016 07:04:29 AM - Process(18280.26) User(mqm) Program(amqrmppa)
Host(ip-10-0-0-238) Installation(Installation1)
VRMF(8.0.0.4) QMgr(CSBTS.QUEUE.MANAGER)
AMQ9209: Connection to host 'ip-10-0-0-238 (10.0.0.238)' for channel 'CHAN2'
closed.
EXPLANATION:
An error occurred receiving data from 'ip-10-0-0-238 (10.0.0.238)' over TCP/IP.
The connection to the remote host has unexpectedly terminated.
The channel name is 'CHAN2'; in some cases it cannot be determined and so is
shown as '????'.
ACTION:
Tell the systems administrator.
这是java代码，
package com.sample.mq.client.ClientMQ;
import java.io.IOException;
import com.ibm.mq.MQC;
import com.ibm.mq.MQEnvironment;
import com.ibm.mq.MQException;
import com.ibm.mq.MQGetMessageOptions;
import com.ibm.mq.MQMessage;
import com.ibm.mq.MQPutMessageOptions;
import com.ibm.mq.MQQueue;
import com.ibm.mq.MQQueueManager;
/**
* Java class to connect to MQ. Post and Retreive messages.
*
*/
public class MQClientTest {
String qMngrStr = "CSBTS.QUEUE.MANAGER";
String user = "mqm";
String password = "bts@2016";
String queueName = "CSBTS.DEAL";
String hostName = "10.0.0.238";
int port = 1414;
String channel = "CHAN2";
//message to put on MQ.
String msg = "Hello World, WelCome to MQ.";
//Create a default local queue.
MQQueue defaultLocalQueue;
MQQueueManager qManager;
/**
* Initialize the MQ
*
*/
public void init(){
//Set MQ connection credentials to MQ Envorinment.
MQEnvironment.hostname = hostname;
MQEnvironment.channel = channel;
MQEnvironment.port = port;
MQEnvironment.userID = user;
MQEnvironment.password = password;
//set transport properties.
MQEnvironment.properties.put(MQC.TRANSPORT_PROPERTY, MQC.TRANSPORT_MQSERIES_CLIENT);
try {
//initialize MQ manager.
qManager = new MQQueueManager(qMngrStr);
} catch (MQException e) {
e.printStackTrace();
}
}
/**
* Method to put message to MQ.
*
*/
public void putAndGetMessage(){
int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT;
try {
defaultLocalQueue = qManager.accessQueue(queueName, openOptions);
MQMessage putMessage = new MQMessage();
putMessage.writeUTF(msg);
//specify the message options...
MQPutMessageOptions pmo = new MQPutMessageOptions();
// accept
// put the message on the queue
defaultLocalQueue.put(putMessage, pmo);
System.out.println("Message is put on MQ.");
//get message from MQ.
MQMessage getMessages = new MQMessage();
//assign message id to get message.
getMessages.messageId = putMessage.messageId;
//get message options.
MQGetMessageOptions gmo = new MQGetMessageOptions();
defaultLocalQueue.get(getMessages, gmo);
String retreivedMsg = getMessages.readUTF();
System.out.println("Message got from MQ: "+retreivedMsg);
} catch (MQException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
System.out.println("Processing Main...");
MQClientTest clientTest = new MQClientTest();
//initialize MQ.
clientTest.init();
//put and retreive message from MQ.
clientTest.putAndGetMessage();
System.out.println("Done!");
}
}
我正在尝试从命令行中读取队列中的消息，
./amqsget CSBTS.DEAL CSBTS.QUEUE.MANAGER
我无法弄清楚问题是什么，是连接还是通道。 P.S我的频道验证被禁用。
答案 0 :(得分：2)
哼哼，从哪里开始？
（1）这是一些糟糕的代码。您的问题不是渠道或凭据，而是您缺乏代码。即使您没有意识到这一点，您的代码实际上也会从队列中放入并检索消息。 MQ日志中出现错误消息的原因是因为队列管理器将WTF表示为您的代码。编程101，如果连接到它，则断开连接。如果您打开它，请在完成后关闭它。不要懒惰，并假设别的东西会清理你的垃圾。因此，日志消息的原因是因为您没有关闭并断开与队列管理器的连接，并且它说WTF。
（2）不要使用MQEnvironment类，而是将连接信息放在Hashtable中并将其传递给MQQueueManager类。 MQEnvironment不是线程安全的。
（3）如果你想在MQGET上匹配MsgID和/或CorrelID，那么你实际上必须告诉队列管理器（参见下面的＆＃39; gmo.matchOptions＆＃39;）。
（4）添加＆＃39; FAIL_IF_QUIESCING＆＃39;所有MQ API调用的选项 - 良好的编程实践。
这里更新了您的代码，以便队列管理器不会说WTF：
import java.io.IOException;
import java.util.Hashtable;
import com.ibm.mq.*;
import com.ibm.mq.constants.CMQC;
/**
* Java class to connect to MQ. Post and Retrieve messages.
*
* Sample Command Line Parameters
* -h 127.0.0.1 -p 1414 -c TEST.CHL -m MQA1 -q TEST.Q1 -u userid -x password
*/
public class MQClientTest
{
private Hashtable<String, String> params = null;
private Hashtable<String, Object> mqht = null;
private String qManager;
private String inputQName;
/**
* The constructor
*/
public MQClientTest()
{
super();
}
/**
* Make sure the required parameters are present.
*
* @return true/false
*/
private boolean allParamsPresent()
{
boolean b = params.containsKey("-h") && params.containsKey("-p") &&
params.containsKey("-c") && params.containsKey("-m") &&
params.containsKey("-u") && params.containsKey("-x") &&
params.containsKey("-q");
if (b)
{
try
{
Integer.parseInt((String) params.get("-p"));
}
catch (NumberFormatException e)
{
b = false;
}
}
return b;
}
/**
* Extract the command-line parameters and initialize the MQ variables.
*
* @param args
* @throws IllegalArgumentException
*/
private void init(String[] args) throws IllegalArgumentException
{
params = new Hashtable<String, String>();
if (args.length > 0 && (args.length % 2) == 0)
{
for (int i = 0; i < args.length; i += 2)
{
params.put(args[i], args[i + 1]);
}
}
else
{
throw new IllegalArgumentException();
}
if (allParamsPresent())
{
qManager = (String) params.get("-m");
inputQName = (String) params.get("-q");
mqht = new Hashtable<String, Object>();
mqht.put(CMQC.CHANNEL_PROPERTY, params.get("-c"));
mqht.put(CMQC.HOST_NAME_PROPERTY, params.get("-h"));
try
{
mqht.put(CMQC.PORT_PROPERTY, new Integer(params.get("-p")));
}
catch (NumberFormatException e)
{
mqht.put(CMQC.PORT_PROPERTY, new Integer(1414));
}
mqht.put(CMQC.USER_ID_PROPERTY, params.get("-u"));
mqht.put(CMQC.PASSWORD_PROPERTY, params.get("-x"));
// I don't want to see MQ exceptions at the console.
MQException.log = null;
}
else
{
throw new IllegalArgumentException();
}
}
/**
* Method to put then get a message to/from a queue.
*/
public void putAndGetMessage()
{
MQQueueManager qMgr = null;
MQQueue queue = null;
MQMessage putMessage = null;
MQMessage getMessage = null;
int openOptions = CMQC.MQOO_INPUT_AS_Q_DEF | CMQC.MQOO_OUTPUT + CMQC.MQOO_FAIL_IF_QUIESCING;
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options = CMQC.MQGMO_NO_WAIT + CMQC.MQGMO_FAIL_IF_QUIESCING;
MQPutMessageOptions pmo = new MQPutMessageOptions();
pmo.options = CMQC.MQPMO_FAIL_IF_QUIESCING;
String msg = "Hello World, WelCome to MQ.";
try
{
qMgr = new MQQueueManager(qManager, mqht);
queue = qMgr.accessQueue(inputQName, openOptions);
putMessage = new MQMessage();
putMessage.writeUTF(msg);
// put the message on the queue
queue.put(putMessage, pmo);
System.out.println("Message is put on MQ.");
// get message from MQ.
getMessage = new MQMessage();
// assign message id to get message.
getMessage.messageId = putMessage.messageId;
/*
* Tell the queue manager that we want a message with a specific MsgID.
*/
gmo.matchOptions = CMQC.MQMO_MATCH_MSG_ID;
// get message options.
queue.get(getMessage, gmo);
String retreivedMsg = getMessage.readUTF();
System.out.println("Message got from MQ: " + retreivedMsg);
}
catch (MQException e)
{
System.err.println("CC=" + e.completionCode + " : RC=" + e.reasonCode);
}
catch (IOException e)
{
e.printStackTrace();
}
finally
{
try
{
if (queue != null)
queue.close();
}
catch (MQException e)
{
System.err.println("MQCLOSE CC=" + e.completionCode + " : RC="
+ e.reasonCode);
}
try
{
if (qMgr != null)
qMgr.disconnect();
}
catch (MQException e2)
{
System.err.println("MQDISC CC=" + e2.completionCode + " : RC="
+ e2.reasonCode);
}
}
}
public static void main(String[] args)
{
System.out.println("Processing Main...");
MQClientTest clientTest = new MQClientTest();
try
{
// initialize MQ.
clientTest.init(args);
// put and retrieve message from MQ.
clientTest.putAndGetMessage();
}
catch (IllegalArgumentException e)
{
System.out.println("Usage: java MQClientTest -h host -p port -c channel -m QueueManagerName -q QueueName -u userid -x password");
System.exit(1);
}
System.out.println("Done!");
}
}
答案 1 :(得分：0)
Harsha，在代码中MQ连接没有断开连接。你能检查一下QueueManager上的MQ Disconnect是否有帮助吗？ （https://www.ibm.com/support/knowledgecenter/SSFKSJ_7.5.0/com.ibm.mq.javadoc.doc/WMQJavaClasses/com/ibm/mq/MQQueueManager.html）
您也可以获得有关此MQSeries线程的更多见解（http://www.mqseries.net/phpBB2/viewtopic.php?t=60349&sid=7370d64b1edf8d305e8e6e980ea423e0），您会发现该错误是因为应用程序未与QM正确断开连接。